READ_ME: The corresponding files contain the supplementary data for the paper DOI: - Modelling_Data.xlsx - Experimental_Data.xlsx - Fig17_Bz_J-Q-T-export-15-17-19ms.txt - Fig17-J-Q-higherdensity-export-15-17-19ms.txt - Fig17-J-Q-export-17p5ms.txt The files are organised as outlined below: _File_: Experimental_Data.xlsx _Sheet_: | _Information_: Read_ME | Sheet providing additional data regarding the collected data - Hall probe locations,s ensitivies and comments on data preparation for analysis. Trapped Fields | Btrap-Bapplied field data post correction (as plotted in 11). 1.27 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 1.27 T. Units = [V] 1.93 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 1.93 T. Units = [V] 2.05 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 2.05 T. Units = [V] 2.09 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 2.09 T. Units = [V] 2.12 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 2.12 T. Units = [V] 2.16 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 2.16 T. Units = [V] 2.19 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 2.19 T. Units = [V] 2.25 T | Raw time-varying voltage data from Hall probes 1-3 as located in figure 10 of manuscript for an applied field of 2.25 T. Units = [V] Figure 9 | Surface profile data - 1.5 mm from the surface - for both top and bottom surfaces of the ring pre- and post- machining to form new rings. | Phi is the angle of the probe array at measurement. R is the position along the array. Field (T) is the measured field. | X pos and Y pos are the equivalent cartesian coordinates for R, Phi from the centre of the scanning array (this may not coincide with the centre of the ring). _File_: Modelling_Data.xlsx _Sheet_: | _Information_: Read_ME | Sheet outlining the contents of the file with any adjustments required to reproduce the data within the paper. Jc(T,B) | Interpolation data for a measured Jc characteristic for a GdBCO sample between 30 and 300 K, for fields up to 20 T [1]. | Jc to be scaled with temperature such that Jc(T) = Jc(T)*(0.7 - 0.0116(T-65)) to reproduce the measured data. Jc(r,z) | Position based Jc scaling factor to reproduce the measured surface profiles under FCM and account for the likely Jc distribution throughout the sample [2]. Figure 2 | COMSOL 5.6 calculated data across the mid-plane of the thin geometry under ZFC for times Ha(t)/Hp = 0,0.1,0.2,...,1. | Jc is constant. | Probed Bz and Jphi data are normalised to Jc and the thickness of the geometry. Unitless. Figure 3 | COMSOL 5.6 calculated data across the mid-plane of ring with a1/a0/d = 8/20/0.01 mm under ZFC for times Ha(t)/Hp = 0,0.1,0.2,...,1.. | Jc defined by the Kim and Jirsa models. | Probed Bz and Jphi data are normalised to Jc(B) and the thickness of the geometry. Unitless. Figure 4 | 2d-axisymmetric data export from COMSOL 5.6 for a finite ring with dimensions a1/a0/d = 8/20/12 mm under ZFC at 10 mT/s at times of Ha/Hp = 0.3,0.5,0.8 and 1. | Jc is constant. | Probed Bz and Jphi data are normalised to Jc and the thickness of the geometry. Unitless. Figure 5 | 2d-axisymmetric data export from COMSOL 5.6 for a finite ring with dimensions a1/a0/d = 8/20/12 mm under ZFC at 10 mT/s at times of Ha/Hp = 0.3,0.5,0.8 and 1. | Jc is the measured Jc data in Jc(T,B) [1]. | Probed Bz and Jphi data are normalised to Jc and the thickness of the geometry. Unitless. Figures 7 & 8 | 2d-axisymmetric data export from COMSOL 5.6 for a finite ring with dimensions a1/a0/d = 8/20/12 mm under ZFC at 10 mT/s to Ha/Hp = 1.5. | Bz data is probed using a domain point probe at position (a1,0). | Jc is the measured Jc data for Jc(65, B) [1]. | Energy calculated as a domain integral of 0.5(B.H) within the ring domain. Figure 13 - Extended | Btrap-Bapplied field data for the modelled ring up to an applied field of 3.25 T. | Btrap data taken at a time of 10.1 s within the simulation. | Data to 2.09 T plotted in figure 13 within manuscript for comparison with measured data (plotted in figure 11) Figure 14 - Extended | Experimental (post-correction) data for Bz field at locations H1-3 for an applied field of 2.09 T. | 2d-axisymmetric data export from COMSOL 5.6 for the finite ring with dimensions a1/a0/d = 8/19/15.1 mm under PFM for an applied fied of 2.09 T. | Modelled Bz data probed using domain point probes at locations H1-3. Temperature data taken using domain point probes at locations H1 & H2. Figure 15 - Extended | Experimental (post-correction) data for Bz field at locations H1-H3 for an applied field of 2.19 T | 2d-axisymmetric data export from COMSOL 5.6 for the finite ring with dimensions a1/a0/d = 8/19/15.1 mm under PFM for an applied fied of 3.12 T. | Modelled Bz data probed using domain point probes at locations H1-3. Temperature data taken using domain point probes at locations H1 & H2. Figure 16 | 2d-axisymmetric data export from COMSOL 5.6 for the finite ring with dimensions a1/a0/d = 8/19/15.1 mm under PFM for an applied fied of 3.12 T. | Modelled Bz data probed using domain point probes at locations H1-3. dT/dt data taken using domain point probes at locations H1 & H2. _File_: Fig17-Bz-J-Q-T-export-15-17-19ms.txt _Sheet_: | _Information_: N/A | 2D COMSOL 5.6 export of Bz, Jphi/Jc, heating and temprature distribution at times of 15, 17 and 19 ms for an applied pulse of 3.12 T. | Data covers region of 8